CALGARY—Johnny Gaudreau had a highlight-reel goal 1:38 into overtime and the Calgary Flames beat the Blackhawks 2-1 on Friday night to remain perfect in overtime games.Calgary has won five times in six games that went to extra time, with the lone loss coming in its only shootout.The Flames dominated the overtime and finally solved goalie Scott Darling with their sixth shot of the period. Gaudreau chased down his own rebound and then went backhand-to-forehand to beat Darling from in tight.Sean Monahan also scored and Karri Ramo made 18 saves to help Calgary win consecutive games for just the second time this season. The Flames have won four straight at the Saddledome. They open a three-game Pacific trip Tuesday night in Arizona.Artem Anisimov scored his eighth and Darling made 35 stops, but the Blackhawks had their three-game win streak halted.Patrick Kane‘s points streak ended at 14 games.The two teams were playing for the second time in less than a week. The Hawks won 4-1 at the United Center last Sunday.Tied 1-1 after 40 minutes, Calgary was the better team in the third, piling up 10 shots on goal before the Hawks got their first one 11:30 into the period.However, despite a 14-4 edge on the period and 31-19 advantage at the end of regulation, the game remained tied. Calgary opened the scoring on Monahan’s seventh goal with 4:55 left when he backhanded a shot past Darling, who got his stick tangled up in Mason Raymond‘s equipment.Joel Quenneville challenged the call for goaltender interference, but it was upheld.The Blackhawks answered back less than 2 minutes later on another goal that would be challenged for the same reason but also was upheld.Brent Seabrook‘s shot was stopped by Ramo, but Anisimov, directly in front of Ramo, spun and fired in the rebound.Ramo had the best save of the game in the first period. With the Hawks buzzing around the Flames net, Marcus Kruger sent a backhand toward the empty net when Ramo, while lying on his stomach, threw up his blocker arm and knocked it out of the air.Making his 10th start in a row, Ramo improved 6-7-0. Notes—Flames defenseman Kris Russell (upper body) exited the game in the first period. … Jiri Hudler (ill) did not play for Calgary. That meant Raymond got a chance to play for the first time in six games. … The Hawks were without Marko Dano (ill) and Teuvo Teravainen (upper body). … Calgary has now scored first 13 times, tied for the league lead. … At 1-0-1 after two stops, the Hawks six-game trip continues Saturday night in Vancouver.